US Military Imposes Blockade on Iranian Ports: What It Means for Global Oil Markets

US Military Blockade Announcement

Cairo: The United States military has declared that it will initiate a blockade of all Iranian ports and coastal regions starting Monday. This decision comes as a modification of President Donald Trump's previous commitment to completely obstruct the vital Strait of Hormuz, following reports indicating a halt in maritime traffic through the waterway.

This action follows extensive ceasefire discussions between the US and Iran in Pakistan, which concluded without a resolution, setting the stage for potential conflict. Iranian officials have pledged to respond to the blockade.

According to US Central Command, the blockade will commence at 10 am EDT (5:30 pm in Iran) and will be enforced uniformly against vessels from all nations entering or leaving Iranian ports, including those on the Arabian Gulf and Gulf of Oman.

CENTCOM clarified that ships traveling between non-Iranian ports would still be permitted to pass through the strait, a reduction from the president's earlier threat to blockade the entire waterway.

Reports indicate that the announcement of the blockade has already disrupted the limited ship traffic that had resumed in the strait since the ceasefire, with marine tracking data showing a drop in commercial vessel crossings from approximately 100-135 per day before the conflict to over 40 since the ceasefire began.

Trump's Tensions with Iran and the Pope

On Sunday, Trump continued his public dispute regarding the war, targeting Pope Leo XIV in a post on Truth Social, labeling the pontiff as 'terrible on foreign policy.' This outburst followed the Pope's condemnation of the war and his call for political leaders to pursue peace negotiations.

Potential Global Impact of the Blockade

The blockade could have far-reaching effects

The blockade is likely aimed at increasing pressure on Iran, which has exported millions of barrels of oil since the onset of the conflict, much of it likely transported through clandestine routes that evade Western sanctions.

Trump's strategy appears to be focused on diminishing Iran's influence over the Strait of Hormuz, a crucial passage for 20% of the world's oil supply prior to the outbreak of hostilities. A US blockade could further destabilize global energy markets.

Following the blockade announcement, oil prices surged in early trading, with US crude climbing 8% to $104.24 per barrel, while Brent crude, the international benchmark, increased by 7% to $102.29. Prior to the conflict, Brent crude was priced around $70 per barrel.

Iran's Response to the Blockade

Iran says 'if you fight, we will fight'

In response, several high-ranking Iranian officials have issued threats of retaliation. Mohsen Rezaei, a military advisor and former Revolutionary Guard Commander, stated on X that Iran possesses 'major untouched levers' to counter the blockade. He emphasized that Iran would not be intimidated by 'tweets and imaginary plans.'

Iran's parliament speaker, Mohammad Bagher Ghalibaf, who represented Iran in the negotiations, warned Trump, 'If you fight, we will fight.'

The Revolutionary Guard of Iran later asserted that the Strait remains under their 'full control' and is open to non-military vessels, but warned that military ships would face a 'forceful response,' according to reports from two semi-official Iranian news agencies.

Ceasefire Talks and Future Uncertainties

During the 21-hour negotiations in Pakistan, the US military reported that two destroyers had passed through the strait ahead of mine-clearing operations, marking the first such movement since the conflict began. Iran, however, denied this.

No word on what happens after ceasefire expires

The recent talks were the highest-level discussions between the two nations since the 1979 Islamic Revolution. Trump attributed the failure of the talks to Tehran's nuclear ambitions, reiterating threats to target civilian infrastructure if Iran does not abandon its nuclear program.

'In half a day, they wouldn't have one bridge standing, they wouldn't have one electric generating plant standing, and they’d be back in the stone ages,' Trump remarked.

Vice President JD Vance, who led the US delegation, stated that Washington requires 'an affirmative commitment that they will not seek a nuclear weapon.'

Iranian negotiators reportedly could not agree to all of the US 'red lines,' which included preventing Iran from acquiring nuclear weapons, halting uranium enrichment, dismantling key enrichment facilities, and allowing the retrieval of highly enriched uranium, as well as reopening the Strait of Hormuz and ceasing funding for groups like Hamas, Hezbollah, and Houthi rebels.

Iranian officials claimed that the talks collapsed over two or three critical issues, attributing the breakdown to what they described as US overreach. Ghalibaf noted some progress in the discussions, urging the United States to determine whether it could earn Iran's trust.

Iran's foreign minister alleged that the US sabotaged the negotiations when they were 'inches' away from an agreement, although no evidence was provided.

'We encountered maximalism, shifting goalposts, and blockade,' Abbas Araghchi wrote on X.

Neither side has indicated what will occur after the ceasefire concludes on April 22.

Pakistani Foreign Minister Ishaq Dar announced that his country would seek to facilitate further dialogue in the coming days, while Iran expressed its willingness to continue discussions, according to state-run IRNA.

Ongoing Tensions Over Iran's Nuclear Program

Iran's nuclear programme key sticking point

The tensions surrounding Iran's nuclear program have been a significant issue long before the US and Israel initiated the war on February 28. The conflict has resulted in the deaths of at least 3,000 individuals in Iran, 2,055 in Lebanon, 23 in Israel, and more than a dozen in Gulf Arab states, while also damaging infrastructure across several countries.

Tehran has consistently denied any intention to pursue nuclear weapons but insists on its right to a civilian nuclear program. The landmark nuclear agreement of 2015, from which Trump later withdrew the US, took over a year of negotiations to finalize. Experts warn that Iran's stockpile of enriched uranium, while not weapons-grade, is only a short technical step away from being so.